220210100221 has 8 divisors (see below), whose sum is σ = 222779705400. Its totient is φ = 217642613760.

The previous prime is 220210100213. The next prime is 220210100249. The reversal of 220210100221 is 122001012022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 30366896121 + 189843204100 = 174261^2 + 435710^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220210100221 - 2³ = 220210100213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220210100261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320116 + ... + 736813.

It is an arithmetic number, because the mean of its divisors is an integer number (27847463175).

Almost surely, 2^220210100221 is an apocalyptic number.

It is an amenable number.

220210100221 is a deficient number, since it is larger than the sum of its proper divisors (2569605179).

220210100221 is a wasteful number, since it uses less digits than its factorization.

220210100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059359.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220210100221 its reverse (122001012022), we get a palindrome (342211112243).

The spelling of 220210100221 in words is "two hundred twenty billion, two hundred ten million, one hundred thousand, two hundred twenty-one".